QD

Qingfeng Dai

Overall (2021): #298,019 of 548,734Top 55%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11134657 Pet leash preventing locking due to jerk Wenwei Tang, Yingzhou Chen, Di Fang, Ying Tang 2021-10-05